Hi all. What's best to use on a new chipboard floor before tiling? Hardi, ditra or another primer/product. Going to fit porcelain floor tiles about 300mm square. Also bathroom wall painted with silk paint, whats best to prime with or do before wall tiling.

I tiled an area of wood floor about a year ago. The floor comprised of tongue and grooved floor boards over laid with 6mm ply screwed down at 150mm centers.I used Unibond adhesive with excellent results.

Hi all. What's best to use on a new chipboard floor before tiling? Hardi, ditra or another primer/product. Going to fit porcelain floor tiles about 300mm square. Also bathroom wall painted with silk paint, whats best to prime with or do before wall tiling.

Many thanks for your advise.

Hardibacker or "no more ply" (note no-more-ply NOT ply)

davyp1 wrote:

I tiled an area of wood floor about a year ago. The floor comprised of tongue and grooved floor boards over laid with 6mm ply screwed down at 150mm centers.I used Unibond adhesive with excellent results.

The addy linked to above is no good for your purpose, it dries via contact with air. you need a flexible cement based addy.

as for the walls give them a rub down with a heavy grade of sandpaper, score the surface with an old blunt chisel or similar. coat with blue grit (google) then the same cement based addy. Topps tiles own brand is good if you are on a budget. Mapeii is my favourite .

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